Miért nem működik a minecraft?

Szóval : elindítom a játékot és beírom a nevemet.Betölt a játék,és amikor feltöltődik,akkor egy ideig fekete az ablak,és ezt írja:

Bad video card drivers!

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Minecraft was unable to start because it failed to find an accelerated OpenGL mode.

This can usually be fixed by updating the video card drivers.

--- BEGIN ERROR REPORT 7fe0271 --------

Generated 2011.07.24. 19:41

Minecraft: Minecraft Beta 1.7.3

OS: Windows 7 (x86) version 6.1

Java: 1.6.0_26, Sun Microsystems Inc.

VM: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.

LWJGL: 2.4.2

[failed to get system properties (java.lang.NullPointerException)]

org.lwjgl.LWJGLException: Pixel format not accelerated

at org.lwjgl.opengl.WindowsPeerInfo.nChoosePixelFormat(Native Method)

at org.lwjgl.opengl.WindowsPeerInfo.choosePixelFormat(WindowsPeerInfo.java:52)

at org.lwjgl.opengl.WindowsDisplay.createWindow(WindowsDisplay.java:185)

at org.lwjgl.opengl.Display.createWindow(Display.java:311)

at org.lwjgl.opengl.Display.create(Display.java:856)

at org.lwjgl.opengl.Display.create(Display.java:784)

at org.lwjgl.opengl.Display.create(Display.java:765)

at net.minecraft.client.Minecraft.a(SourceFile:294)

at net.minecraft.client.Minecraft.run(SourceFile:716)

at java.lang.Thread.run(Unknown Source)

--- END ERROR REPORT 7385cce2 ----------